This is the Best Ever Brownie Frosting, and I am not messing around. Rich and fudge-like, this frosting is insanely delicious! Get ready to lick the bowl clean.
This rich chocolate frosting is silky smooth and simple to make. Taking just 10 minutes to make, and it will add a layer of wow to your brownies that everyone will love.

My dad made this Best Ever Brownie Frosting recipe for as long as I can remember. I have never had a brownie that was better than my dad’s. When I got into college, I decided it was time to learn to make my dad’s brownies.
As I phoned my dad and asked for the frosting recipe, he was delighted that I wanted to make them. What surprised me, even more, was him telling me it could be made in a microwave – this gave me less of an opportunity to ruin it! So then, I asked about his brownie recipe – something unexpected happened. My father informed me he used a ready-made brownie mix?! Unbelievable!!! My dad used a brownie mix! WHAT???

Honestly, I was shocked; how could this be? Why, why on earth did I think they were homemade? Because they were my dad’s brownies. He said he always just used Ghiradelli brownie mixes and then made homemade frosting to give it that homemade taste. Well, it is the frosting that makes it oh, so amazing! His brownies, to me, are still the bomb and can’t be beaten.
Since then, I have used Ghiradelli brownie mixes just like my dad’s brownie frosting. I also use the same brownie mixes in my Fudge Brownie No-Bake Cheesecake; it’s one of my absolute favorite recipes.
I have continued to make my dad’s brownies throughout the year. And everyone loves this best-ever brownie frosting. So while I would top a chocolatey brownie with anything else, you could add sprinkles on top of this chocolate frosting; my girls sure love them this way.

what frosting is best for brownies
There are lots of frosting options for brownies, but this Best Ever Brownie Frosting is my favorite because it’s easy to make and perfectly rich without overpowering the brownies. buttercream frosting or chocolate whipped cream also make delicious toppings.
Simple Frosting Ingredients
- Butter
- Buttermilk
- Cocoa powder
- Vanilla
- Powdered sugar

I had to know where my dad got this recipe for brownie frosting, I mean, he is a fantastic cook, but he has never just made up a dessert recipe; he does make a lot of savory dishes, but sweet ones he always has a recipe.
I was not surprised when he said he got the recipe from Jean, one of our longtime family friends. Jean does have some of the best dessert recipes. I am utterly obsessed with her recipe for Pumpkin Bars.

Let me tell you this brownie frosting elevates your brownies in that it makes them irresistible. Trust me when I say you won’t have any self-restraint and end up licking the bowl clean – that’s what I do every single time!
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Best Ever Brownie Frosting

Video
Ingredients
- 1/2 cup butter
- 6 tablespoons buttermilk
- 4 tablespoons cocoa powder
- 1 tablespoon vanilla
- 3 3/4 cups powdered sugar also equals 1 lb.
Instructions
- In a medium glass mixing bowl add butter and cover with a plate and heat butter for 1 minute in the microwave. Remove from microwave and remove lid. Stir in vanilla and buttermilk, place back in the microwave and heat for 30 seconds, stir, then heat for another 30 seconds, stir, heat for 30 seconds and stir and then heat for another 30 seconds.
- Remove from microwave and stir in cocoa and powder sugar, until well combined. Place back in the microwave and heat for 30 seconds, stir. Heat for another 30 seconds and stir, repeat 1more time if needed, until frosting is smooth and there are no clumps. Pour over brownies, and spread evenly. Let frosting cool and harden.




How much powdered sugar do you add? I looked for the amount listed but couldn’t find it.
3 3/4 cups
Look at the list of ingred.
What about the list of ingredients?
I checked on Amazon & they don’t carry the: Poudre River Cook Book.
I can send you a copy if you would like.
You forgot to mention how much powdered/icing sugar…Looks delicious…thanks 🙂
3 3/4 cups 🙂
These look great! How much powdered sugar?
How much powdered sugar?
3 3/4 cups
I have made the frosting but didn’t see the amount of powder sugar that way needed.
3 3/4 cups
how much powdered sugar, not in recipe
Your brownie frosting is just what I have been looking for….it looks wonderful!
I would like to make this but recipe doesn’t say how much powdered sugar.
That fast?! I am SO going to have to make a bowl of this tonight. Maybe I’ll even make brownies to put it on… or maybe I’ll just grab a big ol’ spoon. 🙂
How much powdered sugar? 🙂
How much powdered sugar do you use? This was left out of the ingredient list.
how much powdered sugar in the brownie frosting? Can’t find measurement in ingredients.
Love how fudgy the frosting looks! The perfect topping for brownies!
Hi, Sandra,
How much powdered sugar is needed for this deliciousness?
Thanks, Cheryl
I was in the middle of making this recipe when I realized that the ingredients list does not include how much powdered sugar. ARGH!!!!! I poured, and poured, and poured about 2.5 cups and wsa not sure how thick it should have been so i stopped adding it for fear of it being too sweet. It is in the refrigerator now to get hard quicker – I hope it tastes okay. It is needed tonight for a fund raiser!
Hi! How much powdered sugar, please?
Sounds amazing! How much powder sugar do you use? It seems to be missing from the ingredients list.
I would love to know how much powdered sugar you use for this frosting.
I don’t see powdered sugar listed in the ingredients. How much do you use?
Thank it for sharing the recipe! I didn’t have buttermilk so I used whole milk and it turned out great!
We made brownies for my son’s party happening later today. We topped a pan of brownies with your frosting and sprinkled M&M minis on top. He is so excited!!
I would be licking the bowl clean.
Great Recipe! Thank you for sharing it. I do have some concerns about the people who couldn’t see the powder sugar amount on the list of ingredients clearly stated ABOVE the direction list and BELOW the prep times. It’s amazing you didn’t pull your hair out on how many people did not pay attention & kept asking the same questions. I worry/question these same people using a microwave to make this recipe or getting behind the wheel of a vehicle and going somewhere! I thought your ingredients list and directions were very to the point. Thank you again for sharing.
Thank you Lottie – you made my day!
LOL… I imagine that when the recipe was first printed, the amt of powdered sugar was omitted?
But I really enjoyed your post LOL
I thought the same thing Lottie!
This looks amazing. I can see the amount of powered sugar needed on the list of ingredients above. Also i would love a copy or The name of the store I can buy it at. If i don’t have buttermilk is there anything i can use in its place? I seen the comment that the lady used whole Milk instead and it turned out great she said. Would u recommend whole milk? Thank you for sharing your family recipe. Kelly
Kelly – powdered sugar mostly anywhere. Where do you live and I can send you link? Also, I have never used anything but buttermilk, so I can say how it would turn out. But with that being said, sounds like some have had success with whole milk. I love buttermilk and the flavor it adds so I encourage it. Enjoy!
San